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(No Model.) 3 Sheets-Sheet 1.

A HAUPP RECOIL OPERATED FIREARM.

No. 545,496. Patented Sept. 3,1895.

mg R wM n wmww (No Model.) 3 Sheets-Sheet 2.

A. HAUFP.

RBGOIL OPERATED FIREARM.

No. 545,496. Patented Sept 3, 1895.

(No Model.) 3 Sheets-Sheet 3. A HAUFF RECOIL OPERATED FIREARM.

No. 545,496. Patented Sept. 3, 1 895.

UNITED STATES ALBERT HA FF, OF

PATENT Fries.-

BERLIN, e RMA'NiT RECOln-OPERATED FIREARM.

SPECIFICATION forming part of Letters Patent No. 545,496, dated September 3, 1895.

Application filed August 25, 1894. Serial No.

Belgium August 20, 1894, No. 111,454: i l/6,062.

12, 1893; in Austria, No. 44/610632, dated No vember 23,1894; in Hungary, No.1,159, dated September 21, 1894, and in Belgium, No.

- 111,454, dated August 20, 1894;) of which the following is a specification.

4 The present invention relates to certain improvements in self-loading firearms by which the opening and closing of the breech and even the firing ofi of the arm may be automatically accomplished as the breech-bolt is thrown back by the recoil after the discharge of the cartridge, a new cartridge fed to the breech, and the same automatically closed again, so that the rifleman has only to insert from time to time a full magazine and to start the firing,-so as to be enabled to produce quick firing of the arm.

My invention consists of a self loading and discharging firearm, the operative parts and constructive details of which will be fully described hereinafter and finally defined in the claims.

In theaccompanying drawings, Figure 1 represents a vertical longitudinal section of my improved firearm, showing a cartridge in the barrel and the parts in position for firing; Fig. 2 is'a like section showing the parts in position immediately after firing, the barrel, breech-bolt, and the parts connected thereto being in their most rearward positions. Fig. 3

is avertical longitudinal section of the fire arm, showing the parts'in position before fir-, ing, but seen from the'opposite side. Fig. 4. is a similar section showing the position immediately after firing with a new cartridge 1olated in line with the breech, ready for insertion into the barrel. Fig. 5 is a vertical transverse section on line a: m, Fig. 1'. Fig. 6 is a detail side view of the oscillating cam-piece,

and Fig. 7 is a. sectional side. elevation of the firearm ready for firing and connected with an automatic firing device.

521,271. (No model.) Patented in England September 12, 1893, No. 17,114; in in Hungary-September 21, 1894, No. 1,159, and in Austria November 23, 1894. No.

Similar letters of reference indicatecorrespending parts.

In my improved firearm the barrel consists of an outershell A and of the barrel B proper,

which latter slides in the former in line with the axis of the barrel. At the rear of the barrel B and rigidly connected therewith, is arranged the guide-s1ceve O for the breechboltD. In this guide-sleeve slides the breechadjacent thereto, as shown in Fig. 1. The

locking-block d is connected with the oscillating cam-piece E by means of pin g, arm h, and pivot t. The cam-piece E forms the connection between the barrel and stock.

0n the under side of the guide-sleeveof the breech-bolt and rigidly attached to the former are two parallel arms F, which carry the pivot of the oscillating cam-piece E. The cam-piece Eisguided by a slot m around a pin it, which is connected by the supporting-pieces and casing p with the stock, and thereby with the guide-shellA ot' the barrel B. The oscillating cam-piece E is further provided with anangular slot q r s, Fig. ,l, which serves to engage a studt of the guidesleeve D. v I

The discharging device consists of two parts -the trigger G. and the sear N, with its catch u. The sear N isrigidly attached at one end. to theguide-sleeve by the stud u. The trigger G is made in theformof a denble lever, and is pivoted-at w to the casing 12, and is in this manner connected with the stock. The longer arm of the trigger G is provided on its upper side with a projection w, whichserves to release the detent H, which is likewise constructed as a double-armed lever and provided with "catches y and z,o f which the catch yserves to retain the sleeve roe lows: When the parts of the firearm are in the position shown in Fig. 1--that is, charged and readyfor firing--the barrel B is in the guide-shell A, a cartridge Iis in the breech of the barrel, and the breech-bolt D closes the 4 breech by its head 0. The releasing-catch t6 retains the firing-pin a in the breech-bolt D and sets the spring I) of the firing-pin to tension. The oscillating cam-piece E is located with its handle K toward the front, and the locking-block is moved up through the guidesleeve 0 into its uppermost position, so that thebreech-bolt abutsagainst the block 61. The catch y on the detent I-I engages the rear end of the sleeve 0 of the breech-bolt D'and retains the sleeve 0 and barrel B firmly in position. When the trigger G is now drawn back, the projection-x on the same presses against the forward arm of the detent H and causes the catch y to release the guide-sleeve O. This must be effected before the discharge of the cartridge, in order that the barrel and guide-sleeve can respond to the recoil. arm 00' of the trigger G next depresses the free end of the sear N and withdraws the reta-ining-catch u, whereby the'firingpin a is released and moved forward by its spring b, so

that thecartridge is fired. O'n the discharge of the arm the barrel B, with the guide-sleeve O, the breech-bolt D, with its firing-pin and spring, the oscillating cam piece E, withthe locking-block d, the sear N, magazine L, and feeder M. are moved in backward direction, without, however, changing the relative positions of the as the pin n arrives in the position n, (shown in dotted lines in Fig. 1,) then theoscillating cam-piece E is tilted in backward direction,

which causesthe downward motion of the locking-block'in the groove by the action of the pin t' and link h, so that the breech-bolt D can pass byits tapered or beveled rear end overthe rounded-off upper end of the block d. As soon as the oscillating cam-piecev be-' gins its tilting motion, the stn d t on the breechbolt D, Figs. 3 and 4, commences to move in 'the angular slot q r 's from q to 'r, and the cam-piece then draws the breech-bolt back for the required distance (about eight to ten centimeters) by moving by its slot q 'r 5 downward along the stud t and upward again, while the pivot it follows the movement of the arms F and the guide-sleeve C. The rearward movemerit of cam-piece E is arrested when the stud tarrives at the apex rot the angular slot (1 r s, as shown in Fig. 4. The empty cartridge shell has been thrown out by the ejector and a new cartridge is brought before the barrel by the feeder M, Fig. 4. A helical. spring P,

Figs. 1 audit, which is located in akeeperbe- The.

arts toward each other. 'As soon low the barrel and which was compressedby the recoil of the parts before mentioned, is expanded and thereby the barrel B and the parts connected therewith moved forward by means of the arm Q. The oscillating campieceE is tilted in forward direction and car-- ries the breech-bolt D along with it by the stud if, the breech-bolt pushing the cartridge into the breech of the barrel. The lockingblock d slides upward again behind the breech-bolt, and the springb of the firingpin a is compressed by the retaining-catch u. A helical spring R, below.the detent H, causes the catchy of the same to re-engage theguidem sleeve 0 of the breeeh bolt, so =thtt the firearm is ready-for the next discharge. the last cartridge is placed in the breech of the barrel, the riflernan .on firing depresses the rear end y of the detent H by the thumb of his right hand, so that catch 2 is placed close to the. undersurface of the-guide-sleeve Ofand the recoil-catch z is pressed into the opening (1 of the guide-sleeve G and holds the same in position until a new magazine has been introduced. When this is accom plished, the catch 2 is released again and the various parts return into the, positions shown in Fig. 1, so that the firearm .is again ready for firing. j For reliably and safely carrying out this operation it is necessary to move back the .oscilating cam-piece E slightly by means of its handle K, while at the same time depressing the detent H by the right hand until the catch .2 has engaged the. o ening d in the guide-sleeve O.

' When the firearm is toi'beused for automatic firing, the breech and firing mechanisms are arranged as shown in Fig. '7. In this" case the locking-block d is'actuated by the oscillating lever m, the fulcrum m 'of which is supported in brackets on, which are rigidly secured to the guide-sleeve of the breech-bolt. On the oscillating cam-piece E is arranged a stud n, which, when the cam-piece is tilted in backward direction, abuts against the lower end of the lever m, so that the upper end m.-

of said lever is lowered, which in its turn effects the downward movement of the lock I ing-block d. When the cam-piece E is tilted in forward direction, the stud n strikes against the nose m of the lever m and raises the locking-block d, which moves up behind the breech-bolt and locks the same in position to the breech. The sear N is arranged to turn in this construction around a pivotpin it and is held in position by a helical spring Z, which is located in a keeper 0 so that the catch it is located in front of the tiringpin and retains the same in its drawn-back position. -A boss '0 is arranged on the campiece E, which, when the cam-piece moves forward, strikes against the searN, depresses it, and at the 'same time releases the catch a from the firing-pin,'which is quickly moved. forward by its spring, so as to discharge the cartridge. After the discharge, the recoil and the movements of the parts take place, as be Whenfore described. For the first discharge tne cam-piece E is turned forward and downward by the handle K, so that the boss 12 withdraws the catch at from the firing-pin and produces by the action of the latter the discharge of the firearm.

Having thus described my invention, I claim as new and desire to secure by Letters Patent-- '1. The combination, or a barrel guided in a shell connected with the stock, a breechin a shell connected with the stock, the breechbolt and the guide-sleeve for the same, of a spring-actuated locking detent provided with catches for locking the guide=sleeve when the breech-bolt is in the breech, and for retaining the same in drawn back position when a new magazine is to be inserted, substantially as set forth.

3. The combinatiomwith the guide-shell of the barrel, and the barrel of a breech-piece, a guide-sleeve for said breech-piece, connected with the barrel, an oscillating cam-piece, a locking block for the breech-piece actuated by said cam-piece,-*a resetting spring on the guide-shell of the barrel; and a pivoted sear and a boss on the cam-niece, adapted to engage the sear and release it from; the firingpin at the forward limit of the closing movement of the parts whereby after the first discharge the parts are automatically opened and locked by the recoil action of the arm and the latter automatically actuated until all.the cartridges in the magazine are discharged, snbstantially as set forth.

In witness whereof I have hereunto set my hand in presence of two witnesses.

ALBERT I-lAUFF.

Witnesses: 

